Improved mode of granulating furnace-slag



MORRIS & EYNON.

Mode of Granulating Furnace Slag.

No. 56.595. Patented luly 24, 1866.

N. PETERS. Phowvmhagmpner, wnshmgwn, D. C.

`'UNrrED STATESv PATENT OrmeaO CHARLES E. MORRIS AND JOHN EYNON, OF BRIDGEPORT, PENNSYLVANIA.

IMPROVED MODE OF GRANULATING FURNACE-SLAG.

Specification forming part of Letters Patent No. 56,595, dated July 24, 1866.

To all whom it may concern: I

Beit known that we, CHARLES E. MORRIS and JOHN EYNON, of Bridgeport, in the county of Montgomery and State of Pennsylvania, have invented a new and useful mode of Granulating Furnace-Slag; and we do hereby declare that the following is a full and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

Furnace-slag is generally cooled in masses accumulated as it runs from the furnace7 and requires to be subsequently7 broken up into coarse fragments by means of heavy handhammers, in order to utilize and dispose of it as ballast for railways and filling for other roads where gravel cannot be had for thesev purposes, the said fragments being found to be the most suitable substitute; but, nevertheless, these crude fragments are too large for advantageous application, especially as under-filling in repairing railways, and it is therefore a matter of great importance to produce the slag in a granulated condition resembling gravel without materially adding to its cost, and this is the object of our invention.

It consists in granulating the slag by running it in its hot fluid condition directly from the furnace into water kept cold in any suitable receiver provided with a delivering-agitator operated so as to agitate the water and discharge the granulated slag as rapidly as it may be produced therein, substantially as hereinafter described.

The drawings represent an appropriate receiver provided with a delivering-agitator, Figure l being a vertical central longitudinal section of the apparatus, and Fig. 2 a transverse section of the same on the dotted line o of Fig. 1, like letters of reference indicating the same parts when in both figures.

AB is a hollow cylinder of cast-iron, closed at both'ends, and through the centers of the latter passes loosely an iron shaft, C, which supports and carries the delivering-agitator D E, which consists of a hollow cast-iron cylinder, d, fixed on the shaft l, and provided with a series of flat blades or arms, e e', arranged and fixed radially and obliquely around upon the periphery of the said cylinder d', so that their outer ends will nearly touch the inner periphery of the receiving-cylinder A B, as shown in the drawings.

Near one end of the cylinder d two iron scoop-shovels, e2 e2, are suspended by journals upon xed radial posts d? d2, so that the said scoops will swingfreely on their said journals. (See Fig. 2.) Corresponding with the positions of the said scoops e2 e2 there is an opening, e3, in one side of the cylinder A B, which is provided with an outside delivery-spout7 j', and at the opposite side of the other end of the cylinder there is a like opening provided with an outside supply spout or trough, g. (See Fig. 2.)

In the middle of the upper side of the cylinder A B there is a large opening provided with a capacious pipe, h, for the escape of vapor, and near it is a smaller opening provided with a water-supplying pipe, z', and at that end of the cylinder A B which is most distant from the pipe i there is an outlet-pipe, 7c, for the free discharge of water.

The cylinder A B is fixed securely upon a substantial base in such a location in relation to the furnace-hearth that the hot fluid slag from the latter can be run directly into the cylinder AB through the spout g, and so also that a strong current of cold water will constantly iiow into the said cylinder through the pipe t', and as it becomes warmed by the entering slag iow out at the pipe k.

Operation: The delivering-agitator D E is put in rotary motion by means of steam or other power applied to the shaft C, so as to cause the blades or arms e' and scoops e2 e2 to be carried round in the direction of the arrow 1. (See Fig. 2.) The hot fluid slag is then gradually run from the furnace into the cylinder A B through the trough g, and, fallin g into the cold water, as indicated by the arrow u, is immediately granulated or broken up by the sudden change of temperature produced by the water into small grains resembling fine gravel free from dust, and as they reach the bottom of the cylinder they are forced along by the oblique blades or arms e2 to the line of motion of the revolving scoops e2 e2, which, in regular succession, carry them up to the opening e3, and tilting therein, as indicated by the arrow fw and dotted lines y, discharge them into the delivery -spout e3, ready for transportation.

.Granulating furnace-slag by running it in its hot Huid condition -from the furnace directly into any suitable receiver containing cold water, substantially in the manner described.

GHAS. E. MORRIS. JOHN EYNON.

Wi tnesses BENJ. MoRIsoN, W. H. MoRIsoN, J oHN WHITE.

sal.- 

